谷底沖積地の自由蛇行河川における護岸・根固の現地調査と二・三の考察

抄録

Improvements in the consciousness of disaster prevention of floods and matters of crisis evasion are points of interest. In this study, detailed field investigation was conducted for natural meandering river at mountain alluvial land, and the nature of meandering pattern and influence to river structures were investigated.

Especially, the importance of existence of large megalith was indicated as that the meandering is easily occurred where the large megalith jam up deposits and the scale of local scour around it becomes large. The plan of bank protection should be carried out based on the meandering characteristics controlled by megalith deposit.